Hi, I'm having my HCG levels monitored due to my previous problems (1 molar & 2mc - I am lucky though and have had 3 healthy ones before these problems). My first results using HCG calculator doubled in 24 hours the next set doubled in 31 hours. As of yesterday 1550 and i reckon I would be about 4w5d. I have read this is ok even though the norm is 48 hours anyone else experiencing this? Sometimes I don't think knowing HCG levels is a good thing - you can't help reading too much into it and checking your levels on every known website!